go-json/internal/encoder/code.go

1456 lines
36 KiB
Go

package encoder
import (
"fmt"
"reflect"
"unsafe"
"github.com/goccy/go-json/internal/errors"
"github.com/goccy/go-json/internal/runtime"
)
type Code interface {
Type() CodeType2
ToOpcode(*compileContext) Opcodes
}
type AnonymousCode interface {
ToAnonymousOpcode(*compileContext) Opcodes
}
type Opcodes []*Opcode
func (o Opcodes) First() *Opcode {
if len(o) == 0 {
return nil
}
return o[0]
}
func (o Opcodes) Last() *Opcode {
if len(o) == 0 {
return nil
}
return o[len(o)-1]
}
type CodeType2 int
const (
CodeTypeInterface CodeType2 = iota
CodeTypePtr
CodeTypeInt
CodeTypeUint
CodeTypeFloat
CodeTypeString
CodeTypeBool
CodeTypeStruct
CodeTypeMap
CodeTypeSlice
CodeTypeArray
CodeTypeBytes
CodeTypeMarshalJSON
CodeTypeMarshalText
CodeTypeRecursive
)
type IntCode struct {
typ *runtime.Type
bitSize uint8
isString bool
isPtr bool
}
func (c *IntCode) Type() CodeType2 {
return CodeTypeInt
}
func (c *IntCode) ToOpcode(ctx *compileContext) Opcodes {
var code *Opcode
switch {
case c.isPtr:
code = newOpCode(ctx, OpIntPtr)
case c.isString:
code = newOpCode(ctx, OpIntString)
default:
code = newOpCode(ctx, OpInt)
}
code.NumBitSize = c.bitSize
ctx.incIndex()
return Opcodes{code}
}
type UintCode struct {
typ *runtime.Type
bitSize uint8
isString bool
isPtr bool
}
func (c *UintCode) Type() CodeType2 {
return CodeTypeUint
}
func (c *UintCode) ToOpcode(ctx *compileContext) Opcodes {
var code *Opcode
switch {
case c.isPtr:
code = newOpCode(ctx, OpUintPtr)
case c.isString:
code = newOpCode(ctx, OpUintString)
default:
code = newOpCode(ctx, OpUint)
}
code.NumBitSize = c.bitSize
ctx.incIndex()
return Opcodes{code}
}
type FloatCode struct {
typ *runtime.Type
bitSize uint8
isString bool
isPtr bool
}
func (c *FloatCode) Type() CodeType2 {
return CodeTypeFloat
}
func (c *FloatCode) ToOpcode(ctx *compileContext) Opcodes {
var code *Opcode
switch {
case c.isPtr:
switch c.bitSize {
case 32:
code = newOpCode(ctx, OpFloat32Ptr)
default:
code = newOpCode(ctx, OpFloat64Ptr)
}
default:
switch c.bitSize {
case 32:
code = newOpCode(ctx, OpFloat32)
default:
code = newOpCode(ctx, OpFloat64)
}
}
ctx.incIndex()
return Opcodes{code}
}
type StringCode struct {
typ *runtime.Type
isString bool
isPtr bool
}
func (c *StringCode) Type() CodeType2 {
return CodeTypeString
}
func (c *StringCode) ToOpcode(ctx *compileContext) Opcodes {
isJsonNumberType := c.typ == runtime.Type2RType(jsonNumberType)
var code *Opcode
if c.isPtr {
if isJsonNumberType {
code = newOpCode(ctx, OpNumberPtr)
} else {
code = newOpCode(ctx, OpStringPtr)
}
} else {
if isJsonNumberType {
code = newOpCode(ctx, OpNumber)
} else {
code = newOpCode(ctx, OpString)
}
}
ctx.incIndex()
return Opcodes{code}
}
type BoolCode struct {
typ *runtime.Type
isString bool
isPtr bool
}
func (c *BoolCode) Type() CodeType2 {
return CodeTypeBool
}
func (c *BoolCode) ToOpcode(ctx *compileContext) Opcodes {
var code *Opcode
switch {
case c.isPtr:
code = newOpCode(ctx, OpBoolPtr)
default:
code = newOpCode(ctx, OpBool)
}
ctx.incIndex()
return Opcodes{code}
}
type BytesCode struct {
typ *runtime.Type
isPtr bool
}
func (c *BytesCode) Type() CodeType2 {
return CodeTypeBytes
}
func (c *BytesCode) ToOpcode(ctx *compileContext) Opcodes {
var code *Opcode
switch {
case c.isPtr:
code = newOpCode(ctx, OpBytesPtr)
default:
code = newOpCode(ctx, OpBytes)
}
ctx.incIndex()
return Opcodes{code}
}
type SliceCode struct {
typ *runtime.Type
value Code
}
func (c *SliceCode) Type() CodeType2 {
return CodeTypeSlice
}
func (c *SliceCode) ToOpcode(ctx *compileContext) Opcodes {
// header => opcode => elem => end
// ^ |
// |________|
size := c.typ.Elem().Size()
header := newSliceHeaderCode(ctx)
ctx.incIndex()
codes := c.value.ToOpcode(ctx.incIndent())
elemCode := newSliceElemCode(ctx.withType(c.typ.Elem()), header, size)
ctx.incIndex()
end := newOpCode(ctx, OpSliceEnd)
ctx.incIndex()
header.End = end
header.Next = codes.First()
codes.Last().Next = elemCode
elemCode.Next = codes.First()
elemCode.End = end
return append(append(Opcodes{header}, codes...), elemCode, end)
}
type ArrayCode struct {
typ *runtime.Type
value Code
}
func (c *ArrayCode) Type() CodeType2 {
return CodeTypeArray
}
func (c *ArrayCode) ToOpcode(ctx *compileContext) Opcodes {
// header => opcode => elem => end
// ^ |
// |________|
elem := c.typ.Elem()
alen := c.typ.Len()
size := elem.Size()
header := newArrayHeaderCode(ctx, alen)
ctx.incIndex()
codes := c.value.ToOpcode(ctx.incIndent())
elemCode := newArrayElemCode(ctx.withType(elem), header, alen, size)
ctx.incIndex()
end := newOpCode(ctx, OpArrayEnd)
ctx.incIndex()
header.End = end
header.Next = codes.First()
codes.Last().Next = elemCode
elemCode.Next = codes.First()
elemCode.End = end
return append(append(Opcodes{header}, codes...), elemCode, end)
}
type MapCode struct {
typ *runtime.Type
key Code
value Code
}
func (c *MapCode) Type() CodeType2 {
return CodeTypeMap
}
func (c *MapCode) ToOpcode(ctx *compileContext) Opcodes {
// header => code => value => code => key => code => value => code => end
// ^ |
// |_______________________|
header := newMapHeaderCode(ctx)
ctx.incIndex()
keyCodes := c.key.ToOpcode(ctx)
value := newMapValueCode(ctx, header)
ctx.incIndex()
valueCodes := c.value.ToOpcode(ctx.incIndent())
key := newMapKeyCode(ctx, header)
ctx.incIndex()
end := newMapEndCode(ctx, header)
ctx.incIndex()
header.Next = keyCodes.First()
keyCodes.Last().Next = value
value.Next = valueCodes.First()
valueCodes.Last().Next = key
key.Next = keyCodes.First()
header.End = end
key.End = end
value.End = end
return append(append(append(append(append(Opcodes{header}, keyCodes...), value), valueCodes...), key), end)
}
type StructCode struct {
typ *runtime.Type
isPtr bool
fields []*StructFieldCode
disableIndirectConversion bool
isIndirect bool
isRecursive bool
recursiveCodes Opcodes
}
func (c *StructCode) Type() CodeType2 {
return CodeTypeStruct
}
func (c *StructCode) ToOpcode(ctx *compileContext) Opcodes {
// header => code => structField => code => end
// ^ |
// |__________|
if c.isRecursive {
recursive := newRecursiveCode(ctx, &CompiledCode{})
recursive.Type = c.typ
ctx.incIndex()
*ctx.recursiveCodes = append(*ctx.recursiveCodes, recursive)
return Opcodes{recursive}
}
codes := Opcodes{}
var prevField *Opcode
ctx = ctx.incIndent()
for idx, field := range c.fields {
isFirstField := idx == 0
isEndField := idx == len(c.fields)-1
fieldCodes := field.ToOpcode(ctx, isFirstField, isEndField)
for _, code := range fieldCodes {
if c.isIndirect {
code.Flags |= IndirectFlags
}
}
if len(codes) > 0 {
codes.Last().Next = fieldCodes.First()
fieldCodes.First().Idx = codes.First().Idx
}
if prevField != nil {
prevField.NextField = fieldCodes.First()
}
if isEndField {
if len(codes) > 0 {
codes.First().End = fieldCodes.Last()
} else if field.isAnonymous {
fieldCodes.First().End = fieldCodes.Last()
//fieldCodes.First().Next.End = fieldCodes.Last()
fieldCode := fieldCodes.First().Next
for fieldCode.NextField != nil {
fieldCode = fieldCode.NextField
}
// link curLastField => endField
fieldCode.NextField = fieldCodes.Last()
} else {
fieldCodes.First().End = fieldCodes.Last()
}
}
if field.isAnonymous {
// fieldCodes.First() is StructHead operation.
// StructHead's next operation is truely head operation.
fieldCode := fieldCodes.First().Next
for fieldCode.NextField != nil {
fieldCode = fieldCode.NextField
}
prevField = fieldCode
} else {
fieldCode := fieldCodes.First()
for fieldCode.NextField != nil {
fieldCode = fieldCode.NextField
}
prevField = fieldCode
}
codes = append(codes, fieldCodes...)
}
if len(codes) == 0 {
end := &Opcode{
Op: OpStructEnd,
Idx: opcodeOffset(ctx.ptrIndex),
DisplayIdx: ctx.opcodeIndex,
Indent: ctx.indent,
}
head := &Opcode{
Op: OpStructHead,
Idx: opcodeOffset(ctx.ptrIndex),
NextField: end,
Type: c.typ,
DisplayIdx: ctx.opcodeIndex,
Indent: ctx.indent,
}
codes = append(codes, head, end)
end.PrevField = head
ctx.incIndex()
}
ctx = ctx.decIndent()
ctx.structTypeToCodes[uintptr(unsafe.Pointer(c.typ))] = codes
return codes
}
func (c *StructCode) ToAnonymousOpcode(ctx *compileContext) Opcodes {
// header => code => structField => code => end
// ^ |
// |__________|
if c.isRecursive {
recursive := newRecursiveCode(ctx, &CompiledCode{})
recursive.Type = c.typ
ctx.incIndex()
*ctx.recursiveCodes = append(*ctx.recursiveCodes, recursive)
return Opcodes{recursive}
}
codes := Opcodes{}
var prevField *Opcode
for idx, field := range c.fields {
isFirstField := idx == 0
isEndField := idx == len(c.fields)-1
fieldCodes := field.ToAnonymousOpcode(ctx, isFirstField, isEndField)
for _, code := range fieldCodes {
if c.isIndirect {
code.Flags |= IndirectFlags
}
}
if len(codes) > 0 {
codes.Last().Next = fieldCodes.First()
fieldCodes.First().Idx = codes.First().Idx
}
if prevField != nil {
prevField.NextField = fieldCodes.First()
}
if isEndField {
if len(codes) > 0 {
codes.First().End = fieldCodes.Last()
} else {
fieldCodes.First().End = fieldCodes.Last()
}
}
prevField = fieldCodes.First()
codes = append(codes, fieldCodes...)
}
return codes
}
func linkRecursiveCode2(ctx *compileContext) {
for _, recursive := range *ctx.recursiveCodes {
typeptr := uintptr(unsafe.Pointer(recursive.Type))
codes := ctx.structTypeToCodes[typeptr]
compiled := recursive.Jmp
compiled.Code = copyOpcode(codes.First())
code := compiled.Code
code.End.Next = newEndOp(&compileContext{})
code.Op = code.Op.PtrHeadToHead()
beforeLastCode := code.End
lastCode := beforeLastCode.Next
lastCode.Idx = beforeLastCode.Idx + uintptrSize
lastCode.ElemIdx = lastCode.Idx + uintptrSize
lastCode.Length = lastCode.Idx + 2*uintptrSize
code.End.Next.Op = OpRecursiveEnd
// extend length to alloc slot for elemIdx + length
totalLength := uintptr(recursive.TotalLength()) + 3
nextTotalLength := uintptr(codes.First().TotalLength()) + 3
compiled.CurLen = totalLength
compiled.NextLen = nextTotalLength
compiled.Linked = true
}
}
func (c *StructCode) removeFieldsByTags(tags runtime.StructTags) {
fields := make([]*StructFieldCode, 0, len(c.fields))
for _, field := range c.fields {
if field.isAnonymous {
structCode := field.getAnonymousStruct()
if structCode != nil && !structCode.isRecursive {
structCode.removeFieldsByTags(tags)
if len(structCode.fields) > 0 {
fields = append(fields, field)
}
continue
}
}
if tags.ExistsKey(field.key) {
continue
}
fields = append(fields, field)
}
c.fields = fields
}
func (c *StructCode) enableIndirect() {
if c.isIndirect {
return
}
c.isIndirect = true
if len(c.fields) == 0 {
return
}
structCode := c.fields[0].getStruct()
if structCode == nil {
return
}
structCode.enableIndirect()
}
type StructFieldCode struct {
typ *runtime.Type
key string
tag *runtime.StructTag
value Code
offset uintptr
isAnonymous bool
isTaggedKey bool
isNilableType bool
isNilCheck bool
isAddrForMarshaler bool
isNextOpPtrType bool
}
func (c *StructFieldCode) getStruct() *StructCode {
value := c.value
ptr, ok := value.(*PtrCode)
if ok {
value = ptr.value
}
structCode, ok := value.(*StructCode)
if ok {
return structCode
}
return nil
}
func (c *StructFieldCode) getAnonymousStruct() *StructCode {
if !c.isAnonymous {
return nil
}
return c.getStruct()
}
func (c *StructFieldCode) ToOpcode(ctx *compileContext, isFirstField, isEndField bool) Opcodes {
var key string
if ctx.escapeKey {
rctx := &RuntimeContext{Option: &Option{Flag: HTMLEscapeOption}}
key = fmt.Sprintf(`%s:`, string(AppendString(rctx, []byte{}, c.key)))
} else {
key = fmt.Sprintf(`"%s":`, c.key)
}
flags := c.flags()
if c.isAnonymous {
flags |= AnonymousKeyFlags
}
field := &Opcode{
Idx: opcodeOffset(ctx.ptrIndex),
Flags: flags,
Key: key,
Offset: uint32(c.offset),
Type: c.typ,
DisplayIdx: ctx.opcodeIndex,
Indent: ctx.indent,
DisplayKey: c.key,
}
ctx.incIndex()
var codes Opcodes
if c.isAnonymous {
codes = c.value.(AnonymousCode).ToAnonymousOpcode(ctx.withType(c.typ))
} else {
codes = c.value.ToOpcode(ctx.withType(c.typ))
}
if isFirstField {
op := optimizeStructHeader(codes.First(), c.tag)
field.Op = op
field.NumBitSize = codes.First().NumBitSize
field.PtrNum = codes.First().PtrNum
fieldCodes := Opcodes{field}
if op.IsMultipleOpHead() {
field.Next = codes.First()
fieldCodes = append(fieldCodes, codes...)
} else {
ctx.decIndex()
}
if isEndField {
end := &Opcode{
Op: OpStructEnd,
Idx: opcodeOffset(ctx.ptrIndex),
DisplayIdx: ctx.opcodeIndex,
Indent: ctx.indent,
}
fieldCodes.Last().Next = end
fieldCodes.First().NextField = end
fieldCodes = append(fieldCodes, end)
ctx.incIndex()
}
return fieldCodes
}
op := optimizeStructField(codes.First(), c.tag)
field.Op = op
field.NumBitSize = codes.First().NumBitSize
field.PtrNum = codes.First().PtrNum
fieldCodes := Opcodes{field}
if op.IsMultipleOpField() {
field.Next = codes.First()
fieldCodes = append(fieldCodes, codes...)
} else {
// optimize codes
ctx.decIndex()
}
if isEndField && !c.isAnonymous {
if isEnableStructEndOptimizationType(c.value.Type()) {
field.Op = field.Op.FieldToEnd()
} else {
end := &Opcode{
Op: OpStructEnd,
Idx: opcodeOffset(ctx.ptrIndex),
DisplayIdx: ctx.opcodeIndex,
Indent: ctx.indent,
}
fieldCodes.Last().Next = end
fieldCodes.First().NextField = end
fieldCodes = append(fieldCodes, end)
ctx.incIndex()
}
}
return fieldCodes
}
func (c *StructFieldCode) flags() OpFlags {
var flags OpFlags
if c.isTaggedKey {
flags |= IsTaggedKeyFlags
}
if c.isNilableType {
flags |= IsNilableTypeFlags
}
if c.isNilCheck {
flags |= NilCheckFlags
}
if c.isAddrForMarshaler {
flags |= AddrForMarshalerFlags
}
if c.isNextOpPtrType {
flags |= IsNextOpPtrTypeFlags
}
return flags
}
func (c *StructFieldCode) ToAnonymousOpcode(ctx *compileContext, isFirstField, isEndField bool) Opcodes {
var key string
if ctx.escapeKey {
rctx := &RuntimeContext{Option: &Option{Flag: HTMLEscapeOption}}
key = fmt.Sprintf(`%s:`, string(AppendString(rctx, []byte{}, c.key)))
} else {
key = fmt.Sprintf(`"%s":`, c.key)
}
flags := c.flags()
flags |= AnonymousHeadFlags
flags |= AnonymousKeyFlags
field := &Opcode{
Idx: opcodeOffset(ctx.ptrIndex),
Flags: flags,
Key: key,
Offset: uint32(c.offset),
Type: c.typ,
DisplayIdx: ctx.opcodeIndex,
Indent: ctx.indent,
DisplayKey: c.key,
}
ctx.incIndex()
var codes Opcodes
if c.isAnonymous {
codes = c.value.(AnonymousCode).ToAnonymousOpcode(ctx.withType(c.typ))
} else {
codes = c.value.ToOpcode(ctx.withType(c.typ))
}
if isFirstField {
op := optimizeStructHeader(codes.First(), c.tag)
field.Op = op
field.NumBitSize = codes.First().NumBitSize
field.PtrNum = codes.First().PtrNum
fieldCodes := Opcodes{field}
if op.IsMultipleOpHead() {
field.Next = codes.First()
fieldCodes = append(fieldCodes, codes...)
} else {
ctx.decIndex()
}
return fieldCodes
}
op := optimizeStructField(codes.First(), c.tag)
field.Op = op
field.NumBitSize = codes.First().NumBitSize
field.PtrNum = codes.First().PtrNum
fieldCodes := Opcodes{field}
if op.IsMultipleOpField() {
field.Next = codes.First()
fieldCodes = append(fieldCodes, codes...)
} else {
// optimize codes
ctx.decIndex()
}
return fieldCodes
}
func isEnableStructEndOptimizationType(typ CodeType2) bool {
switch typ {
case CodeTypeInt, CodeTypeUint, CodeTypeFloat, CodeTypeString, CodeTypeBool:
return true
default:
return false
}
}
type InterfaceCode struct {
typ *runtime.Type
isPtr bool
}
func (c *InterfaceCode) Type() CodeType2 {
return CodeTypeInterface
}
func (c *InterfaceCode) ToOpcode(ctx *compileContext) Opcodes {
var code *Opcode
switch {
case c.isPtr:
code = newOpCode(ctx, OpInterfacePtr)
default:
code = newOpCode(ctx, OpInterface)
}
ctx.incIndex()
return Opcodes{code}
}
type MarshalJSONCode struct {
typ *runtime.Type
}
func (c *MarshalJSONCode) Type() CodeType2 {
return CodeTypeMarshalJSON
}
func (c *MarshalJSONCode) ToOpcode(ctx *compileContext) Opcodes {
code := newOpCode(ctx.withType(c.typ), OpMarshalJSON)
typ := c.typ
if isPtrMarshalJSONType(typ) {
code.Flags |= AddrForMarshalerFlags
}
if typ.Implements(marshalJSONContextType) || runtime.PtrTo(typ).Implements(marshalJSONContextType) {
code.Flags |= MarshalerContextFlags
}
if isNilableType(typ) {
code.Flags |= IsNilableTypeFlags
} else {
code.Flags &= ^IsNilableTypeFlags
}
ctx.incIndex()
return Opcodes{code}
}
type MarshalTextCode struct {
typ *runtime.Type
}
func (c *MarshalTextCode) Type() CodeType2 {
return CodeTypeMarshalText
}
func (c *MarshalTextCode) ToOpcode(ctx *compileContext) Opcodes {
code := newOpCode(ctx.withType(c.typ), OpMarshalText)
typ := c.typ
if !typ.Implements(marshalTextType) && runtime.PtrTo(typ).Implements(marshalTextType) {
code.Flags |= AddrForMarshalerFlags
}
if isNilableType(typ) {
code.Flags |= IsNilableTypeFlags
} else {
code.Flags &= ^IsNilableTypeFlags
}
ctx.incIndex()
return Opcodes{code}
}
type PtrCode struct {
typ *runtime.Type
value Code
ptrNum uint8
}
func (c *PtrCode) Type() CodeType2 {
return CodeTypePtr
}
func (c *PtrCode) ToOpcode(ctx *compileContext) Opcodes {
codes := c.value.ToOpcode(ctx.withType(c.typ.Elem()))
codes.First().Op = convertPtrOp(codes.First())
codes.First().PtrNum = c.ptrNum
return codes
}
func (c *PtrCode) ToAnonymousOpcode(ctx *compileContext) Opcodes {
codes := c.value.(AnonymousCode).ToAnonymousOpcode(ctx.withType(c.typ.Elem()))
codes.First().Op = convertPtrOp(codes.First())
codes.First().PtrNum = c.ptrNum
return codes
}
func type2code(ctx *compileContext) (Code, error) {
typ := ctx.typ
switch {
case implementsMarshalJSON(typ):
return compileMarshalJSON2(ctx)
case implementsMarshalText(typ):
return compileMarshalText2(ctx)
}
isPtr := false
orgType := typ
if typ.Kind() == reflect.Ptr {
typ = typ.Elem()
isPtr = true
}
switch {
case implementsMarshalJSON(typ):
return compileMarshalJSON2(ctx)
case implementsMarshalText(typ):
return compileMarshalText2(ctx)
}
switch typ.Kind() {
case reflect.Slice:
ctx := ctx.withType(typ)
elem := typ.Elem()
if elem.Kind() == reflect.Uint8 {
p := runtime.PtrTo(elem)
if !implementsMarshalJSONType(p) && !p.Implements(marshalTextType) {
return compileBytes2(ctx, isPtr)
}
}
return compileSlice2(ctx)
case reflect.Map:
if isPtr {
return compilePtr2(ctx.withType(runtime.PtrTo(typ)))
}
return compileMap2(ctx.withType(typ))
case reflect.Struct:
return compileStruct2(ctx.withType(typ), isPtr)
case reflect.Int:
return compileInt2(ctx.withType(typ), isPtr)
case reflect.Int8:
return compileInt82(ctx.withType(typ), isPtr)
case reflect.Int16:
return compileInt162(ctx.withType(typ), isPtr)
case reflect.Int32:
return compileInt322(ctx.withType(typ), isPtr)
case reflect.Int64:
return compileInt642(ctx.withType(typ), isPtr)
case reflect.Uint, reflect.Uintptr:
return compileUint2(ctx.withType(typ), isPtr)
case reflect.Uint8:
return compileUint82(ctx.withType(typ), isPtr)
case reflect.Uint16:
return compileUint162(ctx.withType(typ), isPtr)
case reflect.Uint32:
return compileUint322(ctx.withType(typ), isPtr)
case reflect.Uint64:
return compileUint642(ctx.withType(typ), isPtr)
case reflect.Float32:
return compileFloat322(ctx.withType(typ), isPtr)
case reflect.Float64:
return compileFloat642(ctx.withType(typ), isPtr)
case reflect.String:
return compileString2(ctx.withType(typ), isPtr)
case reflect.Bool:
return compileBool2(ctx.withType(typ), isPtr)
case reflect.Interface:
return compileInterface2(ctx.withType(typ), isPtr)
default:
if isPtr && typ.Implements(marshalTextType) {
typ = orgType
}
return type2codeWithPtr(ctx.withType(typ), isPtr)
}
}
func type2codeWithPtr(ctx *compileContext, isPtr bool) (Code, error) {
typ := ctx.typ
switch {
case implementsMarshalJSON(typ):
return compileMarshalJSON2(ctx)
case implementsMarshalText(typ):
return compileMarshalText2(ctx)
}
switch typ.Kind() {
case reflect.Ptr:
return compilePtr2(ctx)
case reflect.Slice:
elem := typ.Elem()
if elem.Kind() == reflect.Uint8 {
p := runtime.PtrTo(elem)
if !implementsMarshalJSONType(p) && !p.Implements(marshalTextType) {
return compileBytes2(ctx, false)
}
}
return compileSlice2(ctx)
case reflect.Array:
return compileArray2(ctx)
case reflect.Map:
return compileMap2(ctx)
case reflect.Struct:
return compileStruct2(ctx, isPtr)
case reflect.Interface:
return compileInterface2(ctx, false)
case reflect.Int:
return compileInt2(ctx, false)
case reflect.Int8:
return compileInt82(ctx, false)
case reflect.Int16:
return compileInt162(ctx, false)
case reflect.Int32:
return compileInt322(ctx, false)
case reflect.Int64:
return compileInt642(ctx, false)
case reflect.Uint:
return compileUint2(ctx, false)
case reflect.Uint8:
return compileUint82(ctx, false)
case reflect.Uint16:
return compileUint162(ctx, false)
case reflect.Uint32:
return compileUint322(ctx, false)
case reflect.Uint64:
return compileUint642(ctx, false)
case reflect.Uintptr:
return compileUint2(ctx, false)
case reflect.Float32:
return compileFloat322(ctx, false)
case reflect.Float64:
return compileFloat642(ctx, false)
case reflect.String:
return compileString2(ctx, false)
case reflect.Bool:
return compileBool2(ctx, false)
}
return nil, &errors.UnsupportedTypeError{Type: runtime.RType2Type(typ)}
}
func compileInt2(ctx *compileContext, isPtr bool) (*IntCode, error) {
return &IntCode{typ: ctx.typ, bitSize: intSize, isPtr: isPtr}, nil
}
func compileInt82(ctx *compileContext, isPtr bool) (*IntCode, error) {
return &IntCode{typ: ctx.typ, bitSize: 8, isPtr: isPtr}, nil
}
func compileInt162(ctx *compileContext, isPtr bool) (*IntCode, error) {
return &IntCode{typ: ctx.typ, bitSize: 16, isPtr: isPtr}, nil
}
func compileInt322(ctx *compileContext, isPtr bool) (*IntCode, error) {
return &IntCode{typ: ctx.typ, bitSize: 32, isPtr: isPtr}, nil
}
func compileInt642(ctx *compileContext, isPtr bool) (*IntCode, error) {
return &IntCode{typ: ctx.typ, bitSize: 64, isPtr: isPtr}, nil
}
func compileUint2(ctx *compileContext, isPtr bool) (*UintCode, error) {
return &UintCode{typ: ctx.typ, bitSize: intSize, isPtr: isPtr}, nil
}
func compileUint82(ctx *compileContext, isPtr bool) (*UintCode, error) {
return &UintCode{typ: ctx.typ, bitSize: 8, isPtr: isPtr}, nil
}
func compileUint162(ctx *compileContext, isPtr bool) (*UintCode, error) {
return &UintCode{typ: ctx.typ, bitSize: 16, isPtr: isPtr}, nil
}
func compileUint322(ctx *compileContext, isPtr bool) (*UintCode, error) {
return &UintCode{typ: ctx.typ, bitSize: 32, isPtr: isPtr}, nil
}
func compileUint642(ctx *compileContext, isPtr bool) (*UintCode, error) {
return &UintCode{typ: ctx.typ, bitSize: 64, isPtr: isPtr}, nil
}
func compileFloat322(ctx *compileContext, isPtr bool) (*FloatCode, error) {
return &FloatCode{typ: ctx.typ, bitSize: 32, isPtr: isPtr}, nil
}
func compileFloat642(ctx *compileContext, isPtr bool) (*FloatCode, error) {
return &FloatCode{typ: ctx.typ, bitSize: 64, isPtr: isPtr}, nil
}
func compileString2(ctx *compileContext, isPtr bool) (*StringCode, error) {
return &StringCode{typ: ctx.typ, isPtr: isPtr}, nil
}
func compileBool2(ctx *compileContext, isPtr bool) (*BoolCode, error) {
return &BoolCode{typ: ctx.typ, isPtr: isPtr}, nil
}
func compileIntString2(ctx *compileContext) (*IntCode, error) {
return &IntCode{typ: ctx.typ, bitSize: intSize, isString: true}, nil
}
func compileInt8String2(ctx *compileContext) (*IntCode, error) {
return &IntCode{typ: ctx.typ, bitSize: 8, isString: true}, nil
}
func compileInt16String2(ctx *compileContext) (*IntCode, error) {
return &IntCode{typ: ctx.typ, bitSize: 16, isString: true}, nil
}
func compileInt32String2(ctx *compileContext) (*IntCode, error) {
return &IntCode{typ: ctx.typ, bitSize: 32, isString: true}, nil
}
func compileInt64String2(ctx *compileContext) (*IntCode, error) {
return &IntCode{typ: ctx.typ, bitSize: 64, isString: true}, nil
}
func compileUintString2(ctx *compileContext) (*UintCode, error) {
return &UintCode{typ: ctx.typ, bitSize: intSize, isString: true}, nil
}
func compileUint8String2(ctx *compileContext) (*UintCode, error) {
return &UintCode{typ: ctx.typ, bitSize: 8, isString: true}, nil
}
func compileUint16String2(ctx *compileContext) (*UintCode, error) {
return &UintCode{typ: ctx.typ, bitSize: 16, isString: true}, nil
}
func compileUint32String2(ctx *compileContext) (*UintCode, error) {
return &UintCode{typ: ctx.typ, bitSize: 32, isString: true}, nil
}
func compileUint64String2(ctx *compileContext) (*UintCode, error) {
return &UintCode{typ: ctx.typ, bitSize: 64, isString: true}, nil
}
func compileSlice2(ctx *compileContext) (*SliceCode, error) {
elem := ctx.typ.Elem()
code, err := compileListElem2(ctx.withType(elem))
if err != nil {
return nil, err
}
if code.Type() == CodeTypeStruct {
structCode := code.(*StructCode)
structCode.enableIndirect()
}
return &SliceCode{typ: ctx.typ, value: code}, nil
}
func compileArray2(ctx *compileContext) (*ArrayCode, error) {
typ := ctx.typ
elem := typ.Elem()
code, err := compileListElem2(ctx.withType(elem))
if err != nil {
return nil, err
}
if code.Type() == CodeTypeStruct {
structCode := code.(*StructCode)
structCode.enableIndirect()
}
return &ArrayCode{typ: ctx.typ, value: code}, nil
}
func compileMap2(ctx *compileContext) (*MapCode, error) {
typ := ctx.typ
keyCode, err := compileMapKey(ctx.withType(typ.Key()))
if err != nil {
return nil, err
}
valueCode, err := compileMapValue2(ctx.withType(typ.Elem()))
if err != nil {
return nil, err
}
if valueCode.Type() == CodeTypeStruct {
structCode := valueCode.(*StructCode)
structCode.enableIndirect()
}
return &MapCode{typ: ctx.typ, key: keyCode, value: valueCode}, nil
}
func compileBytes2(ctx *compileContext, isPtr bool) (*BytesCode, error) {
return &BytesCode{typ: ctx.typ, isPtr: isPtr}, nil
}
func compileInterface2(ctx *compileContext, isPtr bool) (*InterfaceCode, error) {
return &InterfaceCode{typ: ctx.typ, isPtr: isPtr}, nil
}
func compileMarshalJSON2(ctx *compileContext) (*MarshalJSONCode, error) {
return &MarshalJSONCode{typ: ctx.typ}, nil
}
func compileMarshalText2(ctx *compileContext) (*MarshalTextCode, error) {
return &MarshalTextCode{typ: ctx.typ}, nil
}
func compilePtr2(ctx *compileContext) (*PtrCode, error) {
code, err := type2codeWithPtr(ctx.withType(ctx.typ.Elem()), true)
if err != nil {
return nil, err
}
ptr, ok := code.(*PtrCode)
if ok {
return &PtrCode{typ: ctx.typ, value: ptr.value, ptrNum: ptr.ptrNum + 1}, nil
}
return &PtrCode{typ: ctx.typ, value: code, ptrNum: 1}, nil
}
func compileListElem2(ctx *compileContext) (Code, error) {
typ := ctx.typ
switch {
case isPtrMarshalJSONType(typ):
return compileMarshalJSON2(ctx)
case !typ.Implements(marshalTextType) && runtime.PtrTo(typ).Implements(marshalTextType):
return compileMarshalText2(ctx)
case typ.Kind() == reflect.Map:
return compilePtr2(ctx.withType(runtime.PtrTo(typ)))
default:
code, err := type2codeWithPtr(ctx, false)
if err != nil {
return nil, err
}
ptr, ok := code.(*PtrCode)
if ok {
if ptr.value.Type() == CodeTypeMap {
ptr.ptrNum++
}
}
return code, nil
}
}
func compileMapKey(ctx *compileContext) (Code, error) {
typ := ctx.typ
switch {
case implementsMarshalJSON(typ):
return compileMarshalJSON2(ctx)
case implementsMarshalText(typ):
return compileMarshalText2(ctx)
}
switch typ.Kind() {
case reflect.Ptr:
return compilePtr2(ctx)
case reflect.String:
return compileString2(ctx, false)
case reflect.Int:
return compileIntString2(ctx)
case reflect.Int8:
return compileInt8String2(ctx)
case reflect.Int16:
return compileInt16String2(ctx)
case reflect.Int32:
return compileInt32String2(ctx)
case reflect.Int64:
return compileInt64String2(ctx)
case reflect.Uint:
return compileUintString2(ctx)
case reflect.Uint8:
return compileUint8String2(ctx)
case reflect.Uint16:
return compileUint16String2(ctx)
case reflect.Uint32:
return compileUint32String2(ctx)
case reflect.Uint64:
return compileUint64String2(ctx)
case reflect.Uintptr:
return compileUintString2(ctx)
}
return nil, &errors.UnsupportedTypeError{Type: runtime.RType2Type(typ)}
}
func compileMapValue2(ctx *compileContext) (Code, error) {
switch ctx.typ.Kind() {
case reflect.Map:
return compilePtr2(ctx.withType(runtime.PtrTo(ctx.typ)))
default:
code, err := type2codeWithPtr(ctx, false)
if err != nil {
return nil, err
}
ptr, ok := code.(*PtrCode)
if ok {
if ptr.value.Type() == CodeTypeMap {
ptr.ptrNum++
}
}
return code, nil
}
}
func compileStruct2(ctx *compileContext, isPtr bool) (*StructCode, error) {
typ := ctx.typ
typeptr := uintptr(unsafe.Pointer(typ))
if code, exists := ctx.structTypeToCode[typeptr]; exists {
derefCode := *code
derefCode.isRecursive = true
return &derefCode, nil
}
indirect := runtime.IfaceIndir(typ)
code := &StructCode{typ: typ, isPtr: isPtr, isIndirect: indirect}
ctx.structTypeToCode[typeptr] = code
fieldNum := typ.NumField()
tags := typeToStructTags(typ)
fields := []*StructFieldCode{}
for i, tag := range tags {
isOnlyOneFirstField := i == 0 && fieldNum == 1
field, err := code.compileStructField(ctx, tag, isPtr, isOnlyOneFirstField)
if err != nil {
return nil, err
}
if field.isAnonymous {
structCode := field.getAnonymousStruct()
if structCode != nil {
structCode.removeFieldsByTags(tags)
}
if isAssignableIndirect(field, isPtr) {
if indirect {
structCode.isIndirect = true
} else {
structCode.isIndirect = false
}
}
} else {
structCode := field.getStruct()
if structCode != nil {
if indirect {
// if parent is indirect type, set child indirect property to true
structCode.isIndirect = true
} else {
// if parent is not indirect type, set child indirect property to false.
// but if parent's indirect is false and isPtr is true, then indirect must be true.
// Do this only if indirectConversion is enabled at the end of compileStruct.
structCode.isIndirect = false
}
}
}
fields = append(fields, field)
}
fieldMap := getFieldMap(fields)
duplicatedFieldMap := getDuplicatedFieldMap(fieldMap)
code.fields = filteredDuplicatedFields(fields, duplicatedFieldMap)
if !code.disableIndirectConversion && !indirect && isPtr {
code.enableIndirect()
}
delete(ctx.structTypeToCode, typeptr)
return code, nil
}
func getFieldMap(fields []*StructFieldCode) map[string][]*StructFieldCode {
fieldMap := map[string][]*StructFieldCode{}
for _, field := range fields {
if field.isAnonymous {
structCode := field.getAnonymousStruct()
if structCode != nil && !structCode.isRecursive {
for k, v := range getFieldMap(structCode.fields) {
fieldMap[k] = append(fieldMap[k], v...)
}
continue
}
}
fieldMap[field.key] = append(fieldMap[field.key], field)
}
return fieldMap
}
func getDuplicatedFieldMap(fieldMap map[string][]*StructFieldCode) map[*StructFieldCode]struct{} {
duplicatedFieldMap := map[*StructFieldCode]struct{}{}
for _, fields := range fieldMap {
if len(fields) == 1 {
continue
}
if isTaggedKeyOnly(fields) {
for _, field := range fields {
if field.isTaggedKey {
continue
}
duplicatedFieldMap[field] = struct{}{}
}
} else {
for _, field := range fields {
duplicatedFieldMap[field] = struct{}{}
}
}
}
return duplicatedFieldMap
}
func filteredDuplicatedFields(fields []*StructFieldCode, duplicatedFieldMap map[*StructFieldCode]struct{}) []*StructFieldCode {
filteredFields := make([]*StructFieldCode, 0, len(fields))
for _, field := range fields {
if field.isAnonymous {
structCode := field.getAnonymousStruct()
if structCode != nil && !structCode.isRecursive {
structCode.fields = filteredDuplicatedFields(structCode.fields, duplicatedFieldMap)
if len(structCode.fields) > 0 {
filteredFields = append(filteredFields, field)
}
continue
}
}
if _, exists := duplicatedFieldMap[field]; exists {
continue
}
filteredFields = append(filteredFields, field)
}
return filteredFields
}
func isTaggedKeyOnly(fields []*StructFieldCode) bool {
var taggedKeyFieldCount int
for _, field := range fields {
if field.isTaggedKey {
taggedKeyFieldCount++
}
}
return taggedKeyFieldCount == 1
}
func typeToStructTags(typ *runtime.Type) runtime.StructTags {
tags := runtime.StructTags{}
fieldNum := typ.NumField()
for i := 0; i < fieldNum; i++ {
field := typ.Field(i)
if runtime.IsIgnoredStructField(field) {
continue
}
tags = append(tags, runtime.StructTagFromField(field))
}
return tags
}
// *struct{ field T } => struct { field *T }
// func (*T) MarshalJSON() ([]byte, error)
func isMovePointerPositionFromHeadToFirstMarshalJSONFieldCase(typ *runtime.Type, isIndirectSpecialCase bool) bool {
return isIndirectSpecialCase && !isNilableType(typ) && isPtrMarshalJSONType(typ)
}
// *struct{ field T } => struct { field *T }
// func (*T) MarshalText() ([]byte, error)
func isMovePointerPositionFromHeadToFirstMarshalTextFieldCase(typ *runtime.Type, isIndirectSpecialCase bool) bool {
return isIndirectSpecialCase && !isNilableType(typ) && isPtrMarshalTextType(typ)
}
func (c *StructCode) compileStructField(ctx *compileContext, tag *runtime.StructTag, isPtr, isOnlyOneFirstField bool) (*StructFieldCode, error) {
field := tag.Field
fieldType := runtime.Type2RType(field.Type)
isIndirectSpecialCase := isPtr && isOnlyOneFirstField
fieldCode := &StructFieldCode{
typ: fieldType,
key: tag.Key,
tag: tag,
offset: field.Offset,
isAnonymous: field.Anonymous && !tag.IsTaggedKey,
isTaggedKey: tag.IsTaggedKey,
isNilableType: isNilableType(fieldType),
isNilCheck: true,
}
switch {
case isMovePointerPositionFromHeadToFirstMarshalJSONFieldCase(fieldType, isIndirectSpecialCase):
code, err := compileMarshalJSON2(ctx.withType(fieldType))
if err != nil {
return nil, err
}
fieldCode.value = code
fieldCode.isAddrForMarshaler = true
fieldCode.isNilCheck = false
c.isIndirect = false
c.disableIndirectConversion = true
case isMovePointerPositionFromHeadToFirstMarshalTextFieldCase(fieldType, isIndirectSpecialCase):
code, err := compileMarshalText2(ctx.withType(fieldType))
if err != nil {
return nil, err
}
fieldCode.value = code
fieldCode.isAddrForMarshaler = true
fieldCode.isNilCheck = false
c.isIndirect = false
c.disableIndirectConversion = true
case isPtr && isPtrMarshalJSONType(fieldType):
// *struct{ field T }
// func (*T) MarshalJSON() ([]byte, error)
code, err := compileMarshalJSON2(ctx.withType(fieldType))
if err != nil {
return nil, err
}
fieldCode.value = code
fieldCode.isAddrForMarshaler = true
fieldCode.isNilCheck = false
case isPtr && isPtrMarshalTextType(fieldType):
// *struct{ field T }
// func (*T) MarshalText() ([]byte, error)
code, err := compileMarshalText2(ctx.withType(fieldType))
if err != nil {
return nil, err
}
fieldCode.value = code
fieldCode.isAddrForMarshaler = true
fieldCode.isNilCheck = false
default:
code, err := type2codeWithPtr(ctx.withType(fieldType), isPtr)
if err != nil {
return nil, err
}
switch code.Type() {
case CodeTypePtr, CodeTypeInterface:
fieldCode.isNextOpPtrType = true
}
fieldCode.value = code
}
return fieldCode, nil
}
func isAssignableIndirect(fieldCode *StructFieldCode, isPtr bool) bool {
if isPtr {
return false
}
codeType := fieldCode.value.Type()
if codeType == CodeTypeMarshalJSON {
return false
}
if codeType == CodeTypeMarshalText {
return false
}
return true
}